This precision 12″ SAE tempered stainless steel combination square blade is made in the USA by LaSquare. Guaranteed to interface with Starett, Mitutoyo, PEC and Brown and Sharpe combination squares. This blade is made from tempered stainless steel and is 1.00” wide by .085” thick with a groove down one side. Blade has a brushed finish. SAE graduations have quick reading 1/8 and 1/16 markings on one side and 1/32 and 1/64 on the reverse. Graduations are deeply precision photo etched and then black filled for easy readability.